River City Ransom, originally released as Downtown Nekketsu Monogatari (ダウンタウン熱血物語, Dauntaun Nekketsu Monogatari, lit. "Downtown Hot-Blooded Story") or Downtown Nekketsu Story in Japan and later as Street Gangs in PAL regions, is an open world action role-playing beat 'em up video game for the Family Computer/NES. It was developed by Technōs Japan and originally released in Japan on April 25, 1989. It is the third game in Technos' Kunio-kun series released for the console, preceded by Renegade and Super Dodge Ball. Like its predecessors, River City Ransom underwent great changes in its storyline and graphical presentation during its localization in order to make the game more palatable in the Western market. It was one of the first console games published by North American subsidiary American Technos. Remakes of the game have been released for the Sharp X68000, PC-Engine Super CD-ROM², and Game Boy Advance (GBA). The NES version was re-released on the Wii's Virtual Console in 2007. It was also released on the 3DS Virtual Console in the PAL Regions in July 25, 2013 and in North America in November 14, 2013.

Space Harrier (スペースハリアー, Supēsu Hariā) is a third-person rail shooter game, released by Sega in 1985. It was produced by Yu Suzuki, responsible for many popular Sega games. It spawned several sequels: Space Harrier 3-D (1988), Space Harrier II (1988), and the spin-off Planet Harriers (2000). Space Harrier was originally made for the arcades, and later saw ports to many home game systems. Space Harrier's release on the Sega Master System is notable, as there were two versions: one was just like the arcade, while the other, entitled Space Harrier 3-D was actually a sequel. It was one of the first arcade games to use 16-bit graphics and Sega's "Super Scaler" technology that allowed pseudo-3D sprite-scaling at high frame rates, with the ability to scale as many as 32,000 sprites and fill a moving landscape with them, along with over 32,000 colours displayed simultaneously on the screen. It also introduced a true analog flight stick for movement, with the ability to register movement in any direction as well as measure the degree of push, which could move the player character at different speeds depending on how far the stick is pushed in a certain direction. The game was also an early example of a third-person shooter; it was influenced by the earlier 1982 Sega game Buck Rogers: Planet of Zoom, and Space Harrier in turn influenced later 3D shooters such as Nintendo's Star Fox/Starwing in 1993.